<?php
namespace app\model\cms;

use think\Model;
use think\facade\Db;

class NavModel extends Model{

    
    protected $table   = 'sh_cms_nav';
    public static function hasChild( $id ){

        return self::where('pid',$id)->find();
        
    }
    public static function get_nav_list(  ){

        $sql = '';



    }


}